The partial close down of Market resulted in improvements in Muni times for inbound traffic without causing additional congestion along adjacent and parallel streets. At least, that was the supporting evidence to make the forced right turns permanent.

The same was said for the forced right turns on 10th and 6th. As it turns out, no measurable impact. Similar such projects have been attempted in other cities with great success. As an example, Times Square in NYC - they even closed it to Taxi's. Surrounding streets had a slight increase in vehicle speed and there was a reduction in crashes.

I'll stop driving in San Francisco when driving is less efficient.

That's fair. That said, I've yet to see anyone argue that the market corridor is an efficient driving route.

Any final plan has yet to be addressed - only the most aggressive proposal has market closed near Van Ness. Another proposal is to extend the forced rights further down Market. You can express your opinions/concerns next month.